Boiler-bracket.



PATENTED APR. 2. 1907,. J. J. FLETCHER.

BOILER BRACKET.

APPLICATION rum) 001.23, 1906.

In rn torfiga w .Y m

JAMES JENKINS FLETCHER, OF TORONTO, ONTARIO, CANADA.

BOILER-BRACKET.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed October 23,1906- Serial No. 340,175.

To aZZ whom it may concern.-

Be it known that 1, JAMES JENKINS FLETCHER, of No. 610 Bathurst street, in the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Boiler-Brackets; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to improvements in boiler-brackets, as described in the present specification and illustrated by the accompanying drawings, that form part of the same.

The invention consists, essentially, of a plate of metal an ularly formed and centrally depressed to iorm a centrally-arranged outward bulge in relation to the angle of the bracket.

The object of the invention is to reduce the weight of supporting-brackets for boilers, to lessen the cost of production, and to provide a bracket which will facilitate the work of attaching the same to the boiler.

In the drawings, Figure 1 is a perspective view of a bracket attached to a boiler. Fig. 2 is a longitudinal mid-section through the bracket. Fig. 3 is a cross-section through the strut and angle on the line 3 3 of Fig. 2.

Like letters of reference indicate corresponding parts in each figure.

a is a plate of sheet metal, angularly formed at I), having a vertical section 0 formed to the contour of the boiler-shell and suitable rivet-holes therethrough and a horizontal section e.

The horizontal section 6 has an extending portion f turned thereunder and extending parallel therewith and having the end thereof bent downwardly, forming the flange g, said downwardly-extending flange being substantially in alinement with the vertical section 0 and also conforming to the contour of the boiler-shell and rivet holes h therethrough.

The plate a when being formed into its angular shape is depressed midway between the sides thereof to form a bridge or strut i, which extends from the vertical section a to the horizontal section e. The extending portion f of the horizontal section 6 is then A doubled back under the said horizontal section and the end thereof formed into the flange g.

The bracket is secured to the boiler-shell by inserting suitable rivets y' through the rivetholes d in the vertical section 0 and the rivetholes h in the flange g and securely riveting the same in place. The boiler rests on the horizontal sections of the brackets,- and the arched bulge formed by the depression in the plate forms the chief factor of support.

The doubling under of the portion f is a very important feature in the construction of the bracket, as the attaching of the downwardly-extending flange g to the shell of the boiler relieves to a considerable extent the strain on the rivets through the vertical section.

This invention makes it possible to form boiler-brackets out of comparatively lightweight metal, which is very important in view of the fact that they can be constructed of sheet-steel, thus permitting in attaching to the boiler the forming of the flanges of said brackets to suit any existing conditions of uneven surfaces, &c.

Frequently in securing cast-metal brackets to boilers the hammering at one part Where there is any unevenness will destroy the whole bracket, cracking it in one or more places and breaking pieces oif.

Another important feature in the use of sheet-metal brackets is that the material being of the same nature and thickness as the shell of the boiler expands and contracts in equal proportion with the said shell, thus relieving a considerable amount of strain on the boiler-shell as well as the rivets and bracket.

A boiler-bracket such as described may be manufactured very cheaply, and the cost of attaching the same to the boiler will be con siderably less than the cost of attaching castmetal brackets. The weight of the boiler is also considerably reduced by the use of such a bracket.

What I claim as my invention is- A boiler-bracket, comprising a plate of metal angularly formed having a length integral therewith doubled under the horizontal section and terminating in a downwardly: depending flap the latter forming substantially a continuation of the upper vertical section, and the said flap and the said vertical section having suitable rivet-holes therethrough, and the said horizontal and upper vertical sections having a hollow strut formation integral therewith and extending centrally in a direct line to a point intermediate of the length of said Vertical section to a point intermediate of the length of said horizontal section and merging into the flat sur face of said plate and into the angle at each side intermediate of the Width of said sections, substantially as described.

ion of Canada, this 18th day of October, 1906. 10

JAMES JENKINS FLETCHER. l/Vitnesses H. DENNISON, E. WVILKIN. 

